VDB-118120 · CVE-2018-8176 · BID 104184

Microsoft Office 2016 on Mac XML Data input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

A vulnerability has been found in Microsoft Office 2016 on Mac (Office Suite Software) and classified as critical. This vulnerability affects some unknown functionality of the component XML Data Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A remote code execution vulnerability exists in Microsoft PowerPoint software when the software fails to properly validate XML content, aka "Microsoft PowerPoint Remote Code Execution Vulnerability." This affects Microsoft Office.

The bug was discovered 05/15/2018. The weakness was published 05/15/2018 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release has been coordinated with the vendor. This vulnerability was named CVE-2018-8176 since 03/14/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The advisory points out:

A remote code execution vulnerability exists in Microsoft PowerPoint software when the software fails to properly validate XML content. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

The vulnerability scanner Nessus provides a plugin with the ID 109944 (Security Update for Microsoft Office (May 2018) (macOS)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110318 (Microsoft Office for MacOS Multiple Vulnerabilities).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (109944). Similar entries are available at VDB-208865, VDB-208866, VDB-208867 and VDB-208868.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Nessus ID: 109944
Nessus Name: Security Update for Microsoft Office (May 2018) (macOS)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53216
OpenVAS Name: Microsoft Office Multiple Remote Code Execution Vulnerabilities-May18 (Mac OS X)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

03/14/2018 🔍
05/15/2018 +62 days 🔍
05/15/2018 +0 days 🔍
05/15/2018 +0 days 🔍
05/15/2018 +0 days 🔍
05/21/2018 +6 days 🔍
05/23/2018 +1 days 🔍
05/23/2018 +0 days 🔍
03/14/2023 +1756 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8176 (🔍)
SecurityTracker: 1040937
SecurityFocus: 104184 - Microsoft PowerPoint CVE-2018-8176 Remote Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 05/23/2018 07:24 PM
Updated: 03/14/2023 09:29 PM
Changes: 05/23/2018 07:24 PM (78), 02/08/2020 09:46 AM (4), 03/14/2023 09:29 PM (4)
Complete: 🔍
Cache ID: 44:1C6:40

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